* Rebasing changes against master.
* Added back withTx().
* Fix using new error type.
* Moving back database initialization back into the struct.
* Fix failing migration tests.
* Fix linting errors.
* Renamed database object names to be consistent.
* Fixing linting error in imports.
* Rebasing changes against master.
* Added back withTx().
* Fix using new error type.
* Moving back database initialization back into the struct.
* Fix failing migration tests.
* Fix linting errors.
* Renamed database object names to be consistent.
* Fixing linting error in imports.
* Adding missing change from merge.
* Fix error name.
- Drops some unused indexes
- Applies a computed index to timestamp columns
- Applies a partial index for expired pieces
- Uses BETWEEN to avoid some datetime calls
- Filters expired piece search by those that aren't NULL
